January 21, 2010 08:51 PM

Richie Buxo/Splash News Online

While celebrating longtime makeup artist Scott Barnes’ new book About Face last night at Provocateur at N.Y.C.’s Gansevoort Hotel, a Louis Vuitton-clad Jennifer Lopez made it a date night with husband Marc Anthony, but couldn’t resist bragging about her twins — and of course, Barnes himself. “Oh, my God, does she play with the makeup,” Lopez told PEOPLE of daughter Emme tampering with Barnes’ kit as the star is getting dressed. “Both of them do. Max too. They like to paint themselves and you.” Lopez also hinted that if she were to appear on Glee “up against so many high schoolers,” she’d like Barnes to wield his toolbox on the set. “That’s Uncle Scott,” she says. “It’s just like when you go to an office and you have all the same people every day. The hair, the makeup, stylist, the manager. They become like your family. My manager is the godfather to my children.” For his part, the proud “uncle” can’t resist gushing about his niece and nephew: “Emme’s just like Jennifer, she’s really refined and she loves jewelry. She has a little bracelet and she always turns it and looks at it.” Barnes continues: “Max is all boy. And she’s such a girl. She’s says, ‘Look at my shoes!’ She shows you her shoes. He wants to play, he wants to rough house and she’s like, Let me sit here and look at my dress. And I say, ‘Your dress is beautiful!’ And she says, ‘Beautiful.’” Buy a copy of About Face (with J. Lo on the cover, of course!) for $17 at amazon.com now. –Jeffrey Slonim

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